Received: 28 June 2019
Accepted: 8 June 2020
First Online: 2 July 2020
Ethics approval and consent to participate
: This analysis used secondary publicly available data, with permission from the UNICEF country offices and government counterparts.
: Not applicable. We use secondary de-identified data in this analysis.
: The authors declare no competing interests. The views expressed in this article are those of the authors and not the policies or views of affiliated institutions.